Merge pull request #34 from rpgtkoolmv/fix_fadein

fix can't change volume after it fadein

Author: krmbn0576

js/rpg_core/WebAudio.js

@@ -112,7 +112,7 @@ WebAudio._createMasterGainNode = function() {
     var context = WebAudio._context;
     if (context) {
         this._masterGainNode = context.createGain();
-        this._masterGainNode.gain.value = 1;
+        this._masterGainNode.gain.setValueAtTime(1, context.currentTime);
         this._masterGainNode.connect(context.destination);
     }
 };
@@ -278,7 +278,7 @@ Object.defineProperty(WebAudio.prototype, 'volume', {
     set: function(value) {
         this._volume = value;
         if (this._gainNode) {
-            this._gainNode.gain.value = this._volume;
+            this._gainNode.gain.setValueAtTime(this._volume, WebAudio._context.currentTime);
         }
     },
     configurable: true
@@ -539,9 +539,9 @@ WebAudio.prototype._createNodes = function() {
     this._sourceNode.buffer = this._buffer;
     this._sourceNode.loopStart = this._loopStart;
     this._sourceNode.loopEnd = this._loopStart + this._loopLength;
-    this._sourceNode.playbackRate.value = this._pitch;
+    this._sourceNode.playbackRate.setValueAtTime(this._pitch, context.currentTime);
     this._gainNode = context.createGain();
-    this._gainNode.gain.value = this._volume;
+    this._gainNode.gain.setValueAtTime(this._volume, context.currentTime);
     this._pannerNode = context.createPanner();
     this._pannerNode.panningModel = 'equalpower';
     this._updatePanner();